. >> reporter: bill clinton had to overcome personal scandal. >> indeed i did have a relationship with miss lewinsky that was not appropriate. in fact, it was wrong. >> reporter: marred by iraq and katrina. >> brownie, you're doing a heck of a job. >> presidents can also overcome early setbacks, as ronald reagan proved in helping to end the cold war. >> mr. gorbachev, tear down this wall. >> reporter: president obama told matt last year he has a lot of unfinished business. >> do you deserve a second term? >> i deserve a second term, but we're not done. >> is battle fatigue a factor? >> there can be mistakes made and there can be fatigue that sets in. president obama, from what i've seen, is highly energized at this moment, does want to leave a positive legacy. >> advisers say that the president is focused on guns, immigration, energy policy and, of course, the economy, but knows he has a year to at most 18 months to get things done before he is seen as a lame duck. the white house game plan is to campaign aggressively outside washington in order to keep maximum pressure on congress. ma